Calibration problem on Smart-UPS SMT1500I

[Florinfgs_apc]

This was originally posted on APC forums on 7/2/2018

---

Hello everyone,

My company bought last year 1 SMT1500I and May this year another 5 pieces.

Today I decided to run a "Runtime Calibration" on all six UPS-s.

I've putted an 400W heater as a load and started the calibration.

On the UPS that we bought last year the calibration ran fine. The calibration ran for about 40 minutes.

When I tried to run the "Runtime Calibration" on the UPS-s that we bought in May I observed that it runs for only 3-4 minutes than it says "Passed" and ens.

Is it ok for the "Runtime Calibration" to run only 3-4 minutes?

Thanks in advance for the answer.